75545020 has 24 divisors (see below), whose sum is σ = 160053264. Its totient is φ = 29949696.

The previous prime is 75545017. The next prime is 75545021. The reversal of 75545020 is 2054557.

It is a self number, because there is not a number n which added to its sum of digits gives 75545020.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75545021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14454 + ... + 18973.

It is an arithmetic number, because the mean of its divisors is an integer number (6668886).

Almost surely, 2^75545020 is an apocalyptic number.

It is an amenable number.

75545020 is an abundant number, since it is smaller than the sum of its proper divisors (84508244).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

75545020 is a wasteful number, since it uses less digits than its factorization.

75545020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33549 (or 33547 counting only the distinct ones).

The product of its (nonzero) digits is 7000, while the sum is 28.

The square root of 75545020 is about 8691.6638223070. The cubic root of 75545020 is about 422.7353962919.

Adding to 75545020 its reverse (2054557), we get a palindrome (77599577).

The spelling of 75545020 in words is "seventy-five million, five hundred forty-five thousand, twenty".